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How does Python manage int and long?
Does anybody know how Python manage internally int and long types?
9 Answers
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Convert Decimal to Double
...fected by small differences. Since Double is a type which is native to the CPU (internal representation is stored in base 2), calculations made with Double perform better then Decimal (which is represented in base 10 internally).
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Is there a way to access an iteration-counter in Java's for-each loop?
...ide your own counter.
The reason for this is that the for-each loop internally does not have a counter; it is based on the Iterable interface, i.e. it uses an Iterator to loop through the "collection" - which may not be a collection at all, and may in fact be something not at all based on indexes (...
Stopping python using ctrl+c
... it just hides it to the background and suspends it. You can type fg to recall it.
– Shady Xu
Mar 21 '14 at 3:20
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Utilizing multi core for tar+gzip/bzip compression/decompression
I normally compress using tar zcvf and decompress using tar zxvf (using gzip due to habit).
6 Answers
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Creating JSON on the fly with JObject
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'500 gigabyte hard drive'
]
}");
This has the nice benefit of actually being JSON and so it reads as JSON.
Or you have test data that is dynamic you can use JObject.FromObject operation and supply a inline object.
JObject o = JObject.FromObject(new
{
channel = new
{
title ...
How is Python's List Implemented?
...dynamic array. Practical proof: Indexing takes (of course with extremely small differences (0.0013 µsecs!)) the same time regardless of index:
...>python -m timeit --setup="x = [None]*1000" "x[500]"
10000000 loops, best of 3: 0.0579 usec per loop
...>python -m timeit --setup="x = [None]*100...
When to prefer JSON over XML?
...erate with environments that don't support JSON
Favor JSON over XML when all of these are true:
Messages don't need to be validated, or validating their deserialization is simple
You're not transforming messages, or transforming their deserialization is simple
Your messages are mostly data, not ...
Python: List vs Dict for look up table
...the hash table, only pointers, i.e. hou have 40M for the ints (well, not really when a lot of them are small) and 60M for the hash table. I agree that it's not that much of a problem nowadays, still it's worthwhile to keep in mind.
– Torsten Marek
Feb 5 '09 at ...
Quickly create large file on a Windows system
... Just want to check if this is a sparse file or does the file actually have data in it?
– slolife
Jun 2 '11 at 17:35
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